Equisetopsida (Horsetailes)

Equisetopsida, or Sphenopsida, is a class of plants with a fossil record going back to the Devonian. They are commonly known as horsetails. Living species typically grow in wet areas, with needle-like leaves radiating at regular intervals from a single vertical stem. The Equisetopsida were formerly regarded as a separate division of spore plants and also called Equisetophyta, Arthrophyta or Sphenophyta; today they have been recognized as rather close relatives of the typical ferns (Pteridopsida) and form a specialized lineage of the Pteridophyta.

Source: http://en.wikipedia.org/wiki/Equisetopsida

Metacalamostachys dumasii		ZŠ695
Metacalamostachys dumasii	Šimůnek et al. (2017?), Pl. 2, fig. 2	ZŠ626
Palaeostachya disticha		WA36
Palaeostachya disticha		WA37
Palaeostachya disticha		WA55
Palaeostachya disticha		WA56
Palaeostachya disticha		WA33
Palaeostachya elongata		WA154
Palaeostachya elongata		WA143
Palaeostachya elongata		WA26
Palaeostachya elongata		WA115
Palaeostachya elongata		WA124
Palaeostachya ettingshauseni		WA149
Palaeostachya ettingshauseni		WA148
Palaeostachya ettingshauseni		WA155
Palaeostachya ettingshauseni		WA42
Palaeostachya feistmanteli		WA141
Palaeostachya feistmanteli		WA38
Palaeostachya graciliina		WA47
Palaeostachya graciliina		WA49

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]